SortStack #3198 — 2035-03-12

By size · Order from shortest to longest.

1. A one-person kayak 3.4 m

   The kayak was invented by Arctic peoples thousands of years ago, sealed with animal skin to stay watertight.

2. A London double-decker bus 10.9 m

   The classic Routemaster's open rear platform let passengers hop on and off between stops, a hallmark of old London.

3. A yellow school bus 13.7 m

   That specific shade, 'school bus yellow', was chosen in 1939 because it stays visible in dim dawn light.

4. A sperm whale 16 m

   Its head holds the largest brain of any animal that has ever lived, weighing about as much as a small person.

5. The English Channel (narrowest crossing) 33.8 km

   The first person to swim it, in 1875, took nearly 22 hours and slathered himself in porpoise grease for warmth.

6. The Channel Tunnel 50.5 km

   Trains run through three parallel tubes beneath the seabed, with a smaller service tunnel between them for safety.

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